In less than a week you should be able to make useful stuff. These are the kinds of programs, though, that it is easy to forget much of what you learn after you don't use them for a while.
Rhino has an evaluation version which is limited to 25 saves. They have very good tutorials, extensive documentation and an amazingly helpful support team and user group.
Rhino has an evaluation version which is limited to 25 saves. They have very good tutorials, extensive documentation and an amazingly helpful support team and user group.